Читать книгу Essentials of the California Verbal Learning Test - Thomas J. Farrer - Страница 9
Rapid Reference 1.1 Primary Scores Derived in CVLT-C, by Condition
Оглавление| Learning trials | Recall scores | Recognition scores |
| Trial 1 Free-Recall CorrectTrial 5 Free-Recall CorrectTotal Trials 1–5 (T score) List B Free-Recall Trial List B Recall vs. List A Trial 1 Recall (difference score) Semantic Cluster Ratio Serial Cluster Ratio Expected Serial Clustering Percent of Total Recall from Primacy Region Percent of Total Recall from Middle Region Percent of Total Recall from Recency Region Learning Slope Recall Consistency | Short-Delay Free RecallShort-Delay Cued RecallShort-Delay Free Recall vs. List A Trial 5 (difference score)Long-Delay Free RecallLong-Delay Cued RecallLong-Delay Free Recall vs. Short-Delay Free Recall (difference score)Total PerseverationsTotal Free-Recall IntrusionsTotal Cued-Recall IntrusionsTotal Intrusions | Recognition HitsDiscriminabilityDiscriminability vs. Long-Delay Free RecallFalse PositivesResponse Bias |
Difference scores compare performance on one task to performance on another task. On CVLT-C, difference scores are derived using two methods (see Chapter 3 for detailed information on calculating the change scores): raw percentage change and scaled score difference. The raw percentage change scores are not normed due to the heavy influence of the raw scores on the calculation of percentage retained, such that low overall recall can result in higher retention percentages. Difference (or savings) scores utilize the age-corrected scaled scores. Means and standard deviations for the normative sample are provided to provide context for these scores. Change and difference scores should not replace the primary scores but are used to guide the interpretation of differences observed across conditions. Detailed information on the interpretation of scores is provided in Chapter 4.
